CN113848424B - Distribution network lightning stroke fault verification and positioning method, device and system - Google Patents
Distribution network lightning stroke fault verification and positioning method, device and system Download PDFInfo
- Publication number
- CN113848424B CN113848424B CN202111122521.0A CN202111122521A CN113848424B CN 113848424 B CN113848424 B CN 113848424B CN 202111122521 A CN202111122521 A CN 202111122521A CN 113848424 B CN113848424 B CN 113848424B
- Authority
- CN
- China
- Prior art keywords
- fault
- lightning
- lightning stroke
- data set
- distribution network
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/08—Locating faults in cables, transmission lines, or networks
- G01R31/081—Locating faults in cables, transmission lines, or networks according to type of conductors
- G01R31/086—Locating faults in cables, transmission lines, or networks according to type of conductors in power transmission or distribution networks, i.e. with interconnected conductors
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y04—INFORMATION OR COMMUNICATION TECHNOLOGIES HAVING AN IMPACT ON OTHER TECHNOLOGY AREAS
- Y04S—SYSTEMS INTEGRATING TECHNOLOGIES RELATED TO POWER NETWORK OPERATION, COMMUNICATION OR INFORMATION TECHNOLOGIES FOR IMPROVING THE ELECTRICAL POWER GENERATION, TRANSMISSION, DISTRIBUTION, MANAGEMENT OR USAGE, i.e. SMART GRIDS
- Y04S10/00—Systems supporting electrical power generation, transmission or distribution
- Y04S10/50—Systems or methods supporting the power network operation or management, involving a certain degree of interaction with the load-side end user applications
- Y04S10/52—Outage or fault management, e.g. fault detection or location
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The invention discloses a method, a device and a system for verifying and positioning lightning stroke faults of a distribution network. The verification positioning device comprises a data acquisition unit, a standard determination unit and a verification positioning unit. The verification positioning system comprises a verification positioning module, a data storage module and a user interaction module. The method, the device and the system for verifying and positioning the distribution network faults improve accuracy of verification of the distribution network faults and efficiency of positioning lightning strokes.
Description
Technical Field
The invention relates to the field of distribution network lightning stroke fault verification and positioning, and relates to a distribution network lightning stroke fault verification and positioning method, device and system.
Background
Lightning stroke faults are one of the main reasons of distribution network faults, and for southern coastal areas, the proportion of distribution network faults caused by lightning strokes is up to 40%. Under the current social scenario that highly relies on the electric energy, the serious inconvenience that the development in city and resident's life brought is given to distribution network's trouble, in order can avoid this type of problem as far as possible, carries out the lightning protection through distribution network and reforms transform in order to deal with, however, the input of lightning protection transformation is huge, through carrying out the analysis to historical fault data to it can show reduce cost to carry out the lightning protection transformation pertinence, has very important meaning to the capital construction planning.
At present, due to the fact that the lightning stroke fault cause of a distribution network lacks of a verification means, the prior art generally carries out manual judgment through on-site inspection of a result after the fault.
However, the prior art still has the following drawbacks: the judgment result is greatly influenced by professional qualities and subjective factors of inspectors, so that the judgment of the lightning stroke fault cause of the distribution network has inaccuracy; meanwhile, a lightning stroke fault positioning means is lacked, when a lightning stroke fault occurs in a distribution network, distribution network personnel are difficult to find the fault, especially for long lines with few automatic switches, the long lines generally need to spend one day to patrol for several kilometers of line fault detection, the power restoration time is influenced, and the improvement of power supply reliability is seriously restricted.
Therefore, a method, a device and a system for verifying and positioning lightning stroke faults of a distribution network are needed at present, so that the defects in the prior art are overcome.
Disclosure of Invention
Aiming at the existing technical problems, the invention aims to provide a method, a device and a system for verifying and positioning lightning stroke faults of a distribution network, so that the verification accuracy and the positioning efficiency of the lightning stroke faults of the distribution network are improved.
The invention provides a verification positioning method for lightning stroke faults of a distribution network, which comprises the following steps: acquiring a distribution network equipment database and a thunder and lightning database; the distribution network equipment database comprises a historical lightning stroke fault data set and a suspected lightning stroke fault data set, wherein the historical lightning stroke fault data set comprises a lightning stroke fault data set; calculating a characteristic value set of the lightning stroke fault according to a preset characteristic value calculation method and the historical lightning stroke fault data set; the set of characterization values includes confirmed characterization values and excluded characterization values; judging and verifying the suspected lightning stroke fault data set according to the confirmed diagnosis characteristic value, the elimination characteristic value and the lightning drop position data set, and outputting verified suspected lightning stroke fault data; the suspected lightning strike fault data includes fault location information.
In one embodiment, the verified location method further comprises: and when the suspected lightning stroke fault data is not verified, correcting the characteristic value set according to the historical lightning stroke fault data set and the suspected lightning stroke fault data, and replacing the characteristic value set by the corrected characteristic value set.
In one embodiment, the verification location method further comprises: acquiring position data of a plurality of lightning falling points in the lightning falling position data set, acquiring alarm characteristic values in the characteristic value set, and acquiring a device position data set and a line distribution data set in the distribution network device database; calculating and predicting the affected equipment and the affected line in the distance range of the alarm characteristic value of each lightning drop point according to the equipment position data set, the line distribution data set and a preset shortest path evaluation algorithm; sending fault alarm information to a user; the fault warning information includes equipment location of the affected equipment and line profile information of the affected line.
In an embodiment, the calculating the characteristic value group of the lightning stroke fault according to the preset characteristic value calculating method and the historical lightning stroke fault data group specifically includes: acquiring a first fault position data set, a corresponding first fault line data set and a corresponding first lightning strike position data set in the historical lightning strike fault data set; respectively calculating first difference values of each first lightning strike position data in the first lightning strike position data group and each corresponding first fault line data in the first fault line data group, and taking the maximum value of the first difference values as a diagnosis confirmation characterization value; and respectively calculating second difference values of each first fault position data and each corresponding first lightning stroke position data in the first fault position data group, and taking the maximum value of the second difference values as an exclusion characterization value.
The invention also provides a verification positioning device for the lightning stroke fault of the distribution network, which comprises a data acquisition unit, a standard determination unit and a verification positioning unit, wherein the data acquisition unit is used for acquiring a distribution network equipment database and a lightning database; the distribution network equipment database comprises a historical lightning stroke fault data set and a suspected lightning stroke fault data set, and the lightning database comprises a lightning strike position data set; the standard determination unit is used for calculating a characteristic value group of the lightning stroke fault according to a preset characteristic value calculation method and the historical lightning stroke fault data group; the characteristic value set comprises confirmed characteristic values and excluded characteristic values; the verification positioning unit is used for judging and verifying the suspected lightning stroke fault data set according to the confirmed diagnosis characteristic value, the elimination characteristic value and the lightning falling position data set, and outputting verified suspected lightning stroke fault data; the suspected lightning strike fault data includes fault location information.
In one embodiment, the verification positioning device further comprises a fault alarm unit for: acquiring position data of a plurality of lightning falling points in the lightning falling position data set, acquiring alarm characteristic values in the characteristic value set, and acquiring a device position data set and a line distribution data set in the distribution network device database; calculating and predicting the affected equipment and the affected line in the distance range of the alarm characteristic value of each lightning drop point according to the equipment position data set, the line distribution data set and a preset shortest path evaluation algorithm; sending fault alarm information to a user; the fault warning information includes equipment location of the affected equipment and line profile information of the affected line.
In one embodiment, the verification positioning apparatus further comprises a parameter modification unit, the parameter modification unit is configured to: and when the suspected lightning stroke fault data is not verified, correcting the characteristic value group according to the historical lightning stroke fault data group and the suspected lightning stroke fault data, and replacing the characteristic value group by the corrected characteristic value group.
The invention also provides a verification positioning system for the lightning stroke fault of the distribution network, which comprises a verification positioning module, a data storage module and a user interaction module, wherein the verification positioning module, the data storage module and the user interaction module are in communication connection with each other, the verification positioning module is used for executing the verification positioning method for the lightning stroke fault of the distribution network, the data storage module is used for storing a distribution network equipment database and a lightning database, and the user interaction module is used for receiving and displaying suspected lightning stroke fault data output by the verification positioning module to a user.
In one embodiment, the user interaction module is further configured to send a fault alert message to a user.
Compared with the prior art, the embodiment of the invention has the following beneficial effects:
the invention provides a verification positioning method, a verification positioning device and a verification positioning system for lightning stroke faults of a distribution network.
Furthermore, the method, the device and the system for verifying and positioning the lightning stroke fault of the distribution network further calculate and predict the affected equipment and the affected line in the distance range of the alarm representation value of each lightning drop point according to the equipment position data set, the line distribution data set and a preset shortest path evaluation algorithm, and send fault alarm information to a user according to the prediction result, so that the fault early warning of the lightning stroke fault of the distribution network is realized.
Drawings
The invention will be further described with reference to the accompanying drawings, in which:
FIG. 1 shows a flow chart of an embodiment of a method for verification and location of lightning strike faults of a distribution network according to the invention;
FIG. 2 is a flow chart of another embodiment of a method for verifying and locating lightning strike faults of a distribution network according to the invention;
FIG. 3 is a block diagram illustrating one embodiment of a verification locating device for lightning strike faults in a distribution network in accordance with the present invention;
FIG. 4 shows a block diagram of an embodiment of a verification and location system for lightning strike faults of a distribution network according to the invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Detailed description of the preferred embodiment
The embodiment of the invention first describes a method for verifying and positioning lightning stroke faults of a distribution network. FIG. 1 shows a flow chart of an embodiment of a method for verifying and locating lightning strike faults of a distribution network according to the invention. As shown in fig. 1, the method comprises the steps of:
and S1, acquiring a distribution network equipment database and a lightning database.
In order to realize diagnosis and verification of distribution lightning stroke faults, the embodiment of the invention judges whether the faults to be verified have the same or similar characterization characteristics (characterization value set) according to the fault data set of which the fault reason is determined to be lightning stroke, thereby verifying the distribution network fault reason.
The distribution network equipment database comprises a historical lightning stroke fault data set, an equipment position data set, a line distribution data set, a suspected lightning stroke fault data set and other reason fault data sets. In one embodiment, the historical lightning strike fault data set is a fault data set for which the cause of the fault was historically determined to be a lightning strike, and the historical lightning strike fault data set includes a fault location data set, a trip switch data set, a time of fault data set, a fault line data set, and a lightning strike location data set. In one embodiment, the suspected lightning strike fault data set is a fault data set of which the reason of the fault to be verified is lightning strike, and the suspected lightning strike fault data set comprises a fault position data set, a trip switch data set, a fault time data set, a fault line data set and a lightning strike position data set. In one embodiment, the lightning database includes a lightning strike location data set, a current magnitude data set, a polarity data set, and a lightning strike time data set.
And S2, calculating the characteristic value group of the lightning stroke fault according to a preset characteristic value calculation method and the historical lightning stroke fault data group.
In order to perform judgment and verification as described above, it is necessary to select and extract features that can be characterized as lightning faults from multiple sets of data in the existing historical lightning fault data set, so that the features can be used as the criteria for subsequent judgment and verification. Here, the influence distance (the characteristic value group) of the lightning stroke is used as the characteristic for characterizing the lightning stroke fault in the present embodiment according to the lightning characteristics, but it is understood that other characteristics may be selectively extracted from the historical lightning stroke fault data group to characterize the lightning stroke fault.
In one embodiment, the characterization value set comprises a diagnosed characterization value and an excluded characterization value, and the characterization value set represents the distance-affecting feature of the lightning stroke, that is, theoretically, the distance between the fault position and the lightning strike point should be within the range from the diagnosed characterization value to the excluded characterization value.
To calculate the distance-of-impact characteristics (set of characterization values) of a lightning stroke fault, in one embodiment, step S2 is specifically: acquiring a first fault position data set, a corresponding first fault line data set and a corresponding first lightning strike position data set in the historical lightning strike fault data set; respectively calculating first difference values of each first lightning strike position data in the first lightning strike position data group and each corresponding first fault line data in the first fault line data group, and taking the maximum value of the first difference values as a diagnosis confirmation characterization value; and respectively calculating second difference values of each first fault position data and each corresponding first lightning stroke position data in the first fault position data group, and taking the maximum value of the second difference values as an exclusion characterization value.
And S3, judging and verifying the suspected lightning stroke fault data group according to the confirmed diagnosis characteristic value, the elimination characteristic value and the lightning falling position data group, and outputting verified suspected lightning stroke fault data.
After the characteristic value group is obtained, each group of suspected lightning stroke fault data in the suspected lightning stroke fault data group can be verified, and the position information of the fault corresponding to the verified suspected lightning stroke fault data is obtained, so that the verification and the positioning of the lightning stroke fault are realized.
When lightning stroke fault verification is needed, scanning and searching for a lightning drop point by taking a fault position or a fault line position as a circle center and taking a diagnosed characteristic value as a radius, and gradually enlarging a searching range by increasing a radius value until a distance radius is an elimination characteristic value; in the process, if one or more lightning falling points are searched, wherein the difference between the lightning falling time and the fault time does not exceed a preset time range (namely, the lightning strikes fall in an annular area range between a fault position or a fault line position as a circle center and a radius from a diagnosed characteristic value to a removed characteristic value), the suspected lightning stroke fault data corresponding to the fault position accords with the influence distance characteristic of the lightning stroke fault and passes verification; otherwise, the verification is not passed. After the lightning strike fault is verified, the fault position should be output to locate the fault, so that a maintainer can go to the fault position in time to overhaul.
Specifically, in an embodiment, step S3 is specifically: calculating the distance values between the fault positions in the suspected lightning stroke fault data and the lightning falling positions in the lightning falling position data set respectively; and when one or more distance values of the first distances are located in the range from the confirmed characteristic value to the eliminated characteristic value, and the time difference between the fault time corresponding to the fault position and the lightning falling time corresponding to the lightning falling position, which corresponds to at least one first distance, does not exceed the preset time length, judging that the suspected lightning stroke fault data passes the verification, and outputting the fault position of the suspected lightning stroke fault data for positioning. In one embodiment, red, the predetermined period of time is 3 minutes.
In one embodiment, the device location data set and the line distribution data set are displayed in a map form, and the verified suspected lightning stroke fault data are marked on the map in preset images and colors.
The invention provides a verification and positioning method for lightning stroke faults of a distribution network, which comprises the steps of calculating a confirmed diagnosis characteristic value and an elimination characteristic value of the lightning stroke faults by a calculation method according to a historical lightning stroke fault data set and a preset characteristic value, judging whether each set of suspected lightning stroke fault data in a verified suspected lightning stroke fault data set is characterized as the lightning stroke fault or not according to a lightning stroke position data set by taking the confirmed diagnosis characteristic value and the elimination characteristic value of the lightning stroke faults as standards, and outputting verified suspected lightning stroke fault data comprising fault position information.
Detailed description of the invention
Furthermore, the embodiment of the invention also discloses a method for verifying and positioning the lightning stroke fault of the distribution network. Fig. 2 shows a flow chart of another embodiment of the method for verifying and locating lightning stroke fault of the distribution network according to the invention.
As shown in fig. 2, the method comprises the steps of:
and A1, acquiring a distribution network equipment database and a thunder and lightning database.
In order to realize diagnosis and verification of distribution lightning stroke faults, the embodiment of the invention judges whether the faults to be verified have the same or similar characterization characteristics (characterization value set) according to the fault data set of which the fault reason is determined to be lightning stroke, thereby verifying the distribution network fault reason.
The distribution network equipment database comprises a historical lightning stroke fault data set, an equipment position data set, a line distribution data set, a suspected lightning stroke fault data set and other reason fault data sets. In one embodiment, the historical lightning strike fault data set is a fault data set for which the cause of the fault was historically determined to be a lightning strike, and the historical lightning strike fault data set includes a fault location data set, a trip switch data set, a fault time data set, a fault line data set, and a lightning strike location data set. In one embodiment, the suspected lightning strike fault data set is a fault data set of which the cause of the fault to be verified is a lightning strike, and the suspected lightning strike fault data set comprises a fault position data set, a trip switch data set, a fault time data set, a fault line data set and a lightning strike position data set. In one embodiment, the lightning database includes a lightning strike location data set, a current magnitude data set, a polarity data set, and a lightning strike time data set.
And A2, calculating the characteristic value group of the lightning stroke fault according to a preset characteristic value calculation method and the historical lightning stroke fault data group.
In order to perform judgment and verification as described above, it is necessary to select and extract features that can be characterized as lightning faults from multiple sets of data in the existing historical lightning fault data set, so that the features can be used as the criteria for subsequent judgment and verification. Here, the influence distance (the characteristic value group) of the lightning stroke is used as the characteristic for characterizing the lightning stroke fault in the present embodiment according to the lightning characteristics, but it is understood that other characteristics may be selectively extracted from the historical lightning stroke fault data group to characterize the lightning stroke fault.
In one embodiment, the characterization value set comprises a diagnosed characterization value and an excluded characterization value, and the characterization value set represents the distance-affecting feature of the lightning stroke, that is, theoretically, the distance between the fault position and the lightning strike point should be within the range from the diagnosed characterization value to the excluded characterization value.
To calculate the distance-of-influence features (set of characterizing values) for a lightning strike fault, in one embodiment, step A2 is embodied as: acquiring a first fault position data set, a corresponding first fault line data set and a corresponding first lightning strike position data set in the historical lightning strike fault data set; respectively calculating first difference values of each first lightning strike position data in the first lightning strike position data group and each corresponding first fault line data in the first fault line data group, and taking the maximum value of the first difference values as a diagnosis confirmation characterization value; and respectively calculating second difference values of each first fault position data and each corresponding first lightning stroke position data in the first fault position data group, and taking the maximum value of the second difference values as an exclusion characterization value.
In one embodiment, step a2 further includes: and respectively calculating a third difference value between each first fault position data in the first fault position data group and the minimum value in the plurality of first difference values, and taking the maximum value in the plurality of third difference values as an alarm characteristic value.
A3, judging and verifying the suspected lightning stroke fault data group according to the confirmed diagnosis characteristic value, the elimination characteristic value and the lightning falling position data group, and outputting verified suspected lightning stroke fault data.
After the characteristic value group is obtained, each group of suspected lightning stroke fault data in the suspected lightning stroke fault data group can be verified, and the position information of the fault corresponding to the verified suspected lightning stroke fault data is obtained, so that the verification and the positioning of the lightning stroke fault are realized.
When lightning stroke fault verification is needed, scanning and searching for a lightning drop point by taking a fault position or a fault line position as a circle center and taking a diagnosed characteristic value as a radius, and gradually enlarging a searching range by increasing a radius value until a distance radius is an elimination characteristic value; in the process, if one or more lightning falling points are searched, wherein the difference between the lightning falling time and the fault time does not exceed a preset time range (namely, the lightning strikes fall in an annular area range between a fault position or a fault line position as a circle center and a radius from a diagnosed characteristic value to a removed characteristic value), the suspected lightning stroke fault data corresponding to the fault position accords with the influence distance characteristic of the lightning stroke fault and passes verification; otherwise, the verification is not passed. After the lightning strike fault is verified, the fault position should be output to locate the fault, so that a maintainer can go to the fault position in time to overhaul.
Specifically, in one embodiment, step a3 specifically includes: calculating the distance values between the fault positions in the suspected lightning stroke fault data and the lightning falling positions in the lightning falling position data set respectively; and when one or more distance values of the first distances are located in the range from the confirmed characteristic value to the eliminated characteristic value, and the time difference between the fault time corresponding to the fault position and the lightning falling time corresponding to the lightning falling position, which corresponds to at least one first distance, does not exceed the preset time length, judging that the suspected lightning stroke fault data passes the verification, and outputting the fault position of the suspected lightning stroke fault data for positioning. In one embodiment, red, the predetermined period of time is 3 minutes.
A4, when the suspected lightning stroke fault data is not verified, correcting the characteristic value group according to the historical lightning stroke fault data group and the suspected lightning stroke fault data, and replacing the characteristic value group with the corrected characteristic value group.
As the characteristics (influence distance) of the lightning fault do not have standards recognized in the field, and are artificially selected and designed and calculated, the characteristic value set is further corrected through the historical lightning fault data set, so that the accuracy of subsequent verification is improved.
Specifically, the shortest distance between the lightning strike point and the line in the lightning strike fault data of 2 years or more is calculated, and if the maximum value of the distance is smaller than the diagnosis confirmation characterization value, the diagnosis confirmation characterization value is replaced with the maximum value; if the distance between the lightning strike point and the fault position in the lightning strike fault data of two years is less than the maximum value of the distance, the maximum value is replaced by the maximum value; and calculating the distance between the fault position in the lightning stroke fault data of 2 years or more and the point at which the lightning strike point is closest to the off-line, and if the maximum value of the distance is less than the elimination characteristic value, replacing the elimination characteristic value with the maximum value.
In one embodiment, the verification location method further comprises: acquiring position data of a plurality of lightning falling points in the lightning falling position data set, acquiring alarm characteristic values in the characteristic value set, and acquiring a device position data set and a line distribution data set in the distribution network device database; according to the equipment position data group, the line distribution data group and a preset shortest path evaluation algorithm, calculating and predicting the affected equipment and the affected line in the distance range of the alarm representation value of each lightning drop point; sending fault alarm information to a user; the fault warning information includes equipment location of the affected equipment and line profile information of the affected line.
In practical application, searching for a line in a confirmed diagnosis representation value range according to a lightning falling position, judging whether the line has a fault within a preset damage duration according to distribution network fault information, sequencing the line from near to far (if the distances are the same, the time is before the near lightning falling moment), and screening the line 5 at the top and corresponding equipment as affected equipment and an affected line; and sending fault alarm information to the user for the line within the alarm characteristic value range from the center by taking the distribution network line equipment closest to the lightning falling position as the center. In one embodiment, the predetermined damage duration is 3 minutes before and after the lightning strike.
The invention provides a verification positioning method for lightning faults of a distribution network, which comprises the steps of calculating a confirmed characterization value and an excluded characterization value of a lightning fault according to a historical lightning fault data set and a preset characterization value calculation method, judging whether each set of suspected lightning fault data in a verified suspected lightning fault data set is characterized as a lightning fault or not according to a lightning position data set by taking the confirmed characterization value and the excluded characterization value of the lightning fault as standards, and outputting verified suspected lightning fault data including fault position information, wherein the verified lightning fault data pass verification and positioning method improves the verification accuracy and positioning efficiency of the lightning faults of the distribution network; furthermore, according to the distribution network lightning stroke fault verification and positioning method provided by the invention, the affected equipment and the affected line are calculated and predicted within the distance range of the alarm representation value of each lightning drop point according to the equipment position data set, the line distribution data set and a preset shortest path evaluation algorithm, and fault alarm information is sent to a user according to the prediction result, so that the fault early warning of the distribution network lightning stroke fault is realized.
Detailed description of the invention
Besides, the embodiment of the invention also discloses a lightning stroke fault verification and positioning device for the distribution network. FIG. 3 is a block diagram of an embodiment of a distribution network lightning strike fault verification and location device according to the invention.
As shown in fig. 3, the verification positioning device includes a data acquisition unit 11, a criterion determination unit 12, and a verification positioning unit 13.
The data obtaining unit 11 is configured to obtain a distribution network device database and a lightning database. The distribution network equipment database comprises a historical lightning stroke fault data set and a suspected lightning stroke fault data set, and the lightning stroke database comprises a lightning drop position data set.
The standard determination unit 12 is configured to calculate a characteristic value group of the lightning stroke fault according to a preset characteristic value calculation method and the historical lightning stroke fault data group. The set of characterization values includes confirmed characterization values and excluded characterization values.
And the verification positioning unit 13 is configured to judge and verify the suspected lightning stroke fault data set according to the confirmed diagnosis characteristic value, the elimination characteristic value and the lightning strike location data set, and output verified suspected lightning stroke fault data. The suspected lightning strike fault data includes fault location information.
When the lightning stroke fault of the distribution network needs to be verified and positioned, the verification positioning device firstly obtains a distribution network equipment database and a lightning database through the data obtaining unit 11; then, calculating a characteristic value group of the lightning stroke fault through a standard determination unit 12 according to a preset characteristic value calculation method and the historical lightning stroke fault data group; and finally, judging and verifying the suspected lightning stroke fault data set according to the confirmed diagnosis characteristic value, the elimination characteristic value and the lightning falling position data set through a verification positioning unit 13, and outputting verified suspected lightning stroke fault data.
In one embodiment, the verification positioning apparatus further comprises a parameter modification unit, the parameter modification unit is configured to: and when the suspected lightning stroke fault data is not verified, correcting the characteristic value group according to the historical lightning stroke fault data group and the suspected lightning stroke fault data.
In one embodiment, the verification positioning device further comprises a fault alarm unit for: acquiring position data of a plurality of lightning falling points in the lightning falling position data set, acquiring alarm characteristic values in the characteristic value set, and acquiring a device position data set and a line distribution data set in the distribution network device database; calculating and predicting the affected equipment and the affected line in the distance range of the alarm characteristic value of each lightning drop point according to the equipment position data set, the line distribution data set and a preset shortest path evaluation algorithm; sending fault alarm information to a user; the fault warning information includes equipment location of the affected equipment and line profile information of the affected line.
The invention provides a verification positioning device for lightning stroke faults of a distribution network, which calculates the confirmed diagnosis characteristic value and the eliminated characteristic value of the lightning stroke faults by a calculation method according to a historical lightning stroke fault data set and a preset characteristic value, judges whether each set of suspected lightning stroke fault data in a verified suspected lightning stroke fault data set is characterized as the lightning stroke fault or not according to a lightning stroke position data set by taking the confirmed diagnosis characteristic value and the eliminated characteristic value of the lightning stroke faults as standards, and outputs the verified suspected lightning stroke fault data including fault position information, wherein the verification positioning device improves the verification accuracy and the positioning efficiency of the lightning stroke faults of the distribution network; furthermore, the distribution network lightning stroke fault verification and positioning device provided by the invention also calculates and predicts the affected equipment and the affected line in the distance range of the alarm representation value of each lightning drop point according to the equipment position data set, the line distribution data set and the preset shortest path evaluation algorithm, and sends fault alarm information to a user according to the prediction result, thereby realizing the fault early warning of the distribution network lightning stroke fault.
Detailed description of the invention
Besides the method and the device, the invention also describes a verification positioning system for the lightning stroke fault of the distribution network. FIG. 4 shows a block diagram of an embodiment of a verification and location system for lightning strike faults of a distribution network according to the invention.
As shown in fig. 4, the verification positioning system includes a verification positioning module 1, a data storage module 2 and a user interaction module 3, wherein the verification positioning module 1, the data storage module 2 and the user interaction module 3 are communicatively connected to each other.
The verification positioning module 1 is configured to execute the verification positioning method for the lightning strike fault of the distribution network, so as to obtain and output verified suspected lightning strike fault data. In one embodiment, specifically, the verification positioning module 1 first obtains a distribution network device database and a lightning database; then, according to a preset characteristic value calculation method and the historical lightning stroke fault data set, calculating a characteristic value set of the lightning stroke fault; and finally, judging and verifying the suspected lightning stroke fault data group according to the confirmed characteristic value, the excluded characteristic value and the lightning position data group, and outputting verified suspected lightning stroke fault data.
The data storage module 2 is used for storing a distribution network equipment database and a lightning database.
And the user interaction module 3 is used for receiving and displaying the suspected lightning stroke fault data output by the verification positioning module to a user.
In one embodiment, the user interaction module 3 is further configured to send a fault alert message to a user. In one embodiment, the user interaction module may be one or more user terminals. In one embodiment, the user interaction module 3 comprises a touchable/touchable display screen, an input keyboard, a virtual keyboard, an indicator light, a buzzer, a sound, a GPS positioning system, and one or more of the above.
The invention provides a verification positioning system for lightning stroke faults of a distribution network, which calculates the confirmed diagnosis characteristic value and the eliminated characteristic value of the lightning stroke faults by a calculation method according to a historical lightning stroke fault data set and a preset characteristic value, judges whether each set of suspected lightning stroke fault data in a verified suspected lightning stroke fault data set is characterized as the lightning stroke fault or not according to a lightning stroke position data set by taking the confirmed diagnosis characteristic value and the eliminated characteristic value of the lightning stroke faults as standards, and outputs the verified suspected lightning stroke fault data including fault position information, wherein the verification positioning system improves the verification accuracy and the positioning efficiency of the lightning stroke faults of the distribution network; furthermore, the verification positioning system for the lightning stroke fault of the distribution network provided by the invention also calculates and predicts the affected equipment and the affected line in the distance range of the alarm representation value of each lightning drop point according to the equipment position data set, the line distribution data set and a preset shortest path evaluation algorithm, and sends fault alarm information to a user according to the prediction result, thereby realizing the fault early warning of the lightning stroke fault of the distribution network.
The above-mentioned embodiments are provided to further explain the objects, technical solutions and advantages of the present invention in detail, and it should be understood that the above-mentioned embodiments are only examples of the present invention and are not intended to limit the scope of the present invention. It should be understood that any modifications, equivalents, improvements and the like, which come within the spirit and principle of the invention, may occur to those skilled in the art and are intended to be included within the scope of the invention.
Claims (8)
1. A distribution network lightning stroke fault verification and positioning method is characterized by comprising the following steps:
acquiring a distribution network equipment database and a thunder and lightning database; the distribution network equipment database comprises a historical lightning stroke fault data set and a suspected lightning stroke fault data set, and the lightning stroke database comprises a lightning drop position data set;
calculating a characteristic value group of the lightning stroke fault according to a preset characteristic value calculation method and the historical lightning stroke fault data group; the characteristic value set comprises confirmed characteristic values and excluded characteristic values;
judging and verifying the suspected lightning stroke fault data set according to the confirmed characterization value, the excluded characterization value and the lightning strike position data set, and outputting verified suspected lightning stroke fault data; the suspected lightning stroke fault data comprise fault position information;
acquiring position data of a plurality of lightning falling points in the lightning falling position data set, acquiring alarm characteristic values in the characteristic value set, and acquiring a device position data set and a line distribution data set in the distribution network device database;
according to the equipment position data group, the line distribution data group and a preset shortest path evaluation algorithm, calculating and predicting the affected equipment and the affected line in the distance range of the alarm representation value of each lightning drop point;
sending fault alarm information to a user; the fault alert information includes equipment location of the affected equipment and line profile information for the affected line.
2. The method for verifying and locating lightning strike faults of distribution networks according to claim 1, wherein the method for verifying and locating lightning strike faults of distribution networks further comprises the following steps:
and when the suspected lightning stroke fault data is not verified, correcting the characteristic value set according to the historical lightning stroke fault data set and the suspected lightning stroke fault data, and replacing the characteristic value set by the corrected characteristic value set.
3. The method for verifying and positioning the lightning stroke fault of the distribution network according to claim 1 or 2, wherein the characteristic value group of the lightning stroke fault is calculated according to a preset characteristic value calculation method and the historical lightning stroke fault data group, and specifically comprises the following steps:
acquiring a first fault position data set, a corresponding first fault line data set and a corresponding first lightning strike position data set in the historical lightning strike fault data set;
respectively calculating first difference values of each first lightning strike position data in the first lightning strike position data group and each corresponding first fault line data in the first fault line data group, and taking the maximum value of the first difference values as a diagnosis confirmation characterization value;
and respectively calculating second difference values of each first fault position data and each corresponding first lightning stroke position data in the first fault position data group, and taking the maximum value of the second difference values as an exclusion characterization value.
4. The distribution network lightning stroke fault verification and positioning device is characterized by comprising a data acquisition unit, a standard determination unit and a verification and positioning unit,
the data acquisition unit is used for acquiring a distribution network equipment database and a thunder and lightning database; the distribution network equipment database comprises a historical lightning stroke fault data set and a suspected lightning stroke fault data set, and the lightning stroke database comprises a lightning drop position data set;
the standard determination unit is used for calculating a characteristic value group of the lightning stroke fault according to a preset characteristic value calculation method and the historical lightning stroke fault data group; the set of characterization values includes confirmed characterization values and excluded characterization values;
the verification positioning unit is used for judging and verifying the suspected lightning stroke fault data set according to the confirmed diagnosis characteristic value, the elimination characteristic value and the lightning drop position data set and outputting verified suspected lightning stroke fault data; the suspected lightning strike fault data includes fault location information.
5. The distribution network lightning strike fault verification and location device of claim 4, further comprising a fault alarm unit for:
acquiring position data of a plurality of lightning falling points in the lightning falling position data set, acquiring alarm characteristic values in the characteristic value set, and acquiring a device position data set and a line distribution data set in the distribution network device database;
according to the equipment position data group, the line distribution data group and a preset shortest path evaluation algorithm, calculating and predicting the affected equipment and the affected line in the distance range of the alarm representation value of each lightning drop point;
sending fault alarm information to a user; the fault warning information includes equipment location of the affected equipment and line profile information of the affected line.
6. The distribution network lightning stroke fault verification and positioning device according to claim 4 or 5, characterized in that the verification and positioning device further comprises a parameter correction unit, and the parameter correction unit is used for:
and when the suspected lightning stroke fault data is not verified, correcting the characteristic value set according to the historical lightning stroke fault data set and the suspected lightning stroke fault data, and replacing the characteristic value set by the corrected characteristic value set.
7. The distribution network lightning stroke fault verification and positioning system is characterized by comprising a verification and positioning module, a data storage module and a user interaction module, wherein the verification and positioning module, the data storage module and the user interaction module are in communication connection with each other, the verification and positioning module is used for executing the distribution network lightning stroke fault verification and positioning method according to any one of claims 1-3, the data storage module is used for storing a distribution network equipment database and a lightning database, and the user interaction module is used for receiving and displaying suspected lightning stroke fault data output by the verification and positioning module to a user.
8. The system of claim 7, wherein the user interaction module is further configured to send a fault alert message to a user.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111122521.0A CN113848424B (en) | 2021-09-24 | 2021-09-24 | Distribution network lightning stroke fault verification and positioning method, device and system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111122521.0A CN113848424B (en) | 2021-09-24 | 2021-09-24 | Distribution network lightning stroke fault verification and positioning method, device and system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113848424A CN113848424A (en) | 2021-12-28 |
| CN113848424B true CN113848424B (en) | 2022-09-23 |
Family
ID=78979299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111122521.0A Active CN113848424B (en) | 2021-09-24 | 2021-09-24 | Distribution network lightning stroke fault verification and positioning method, device and system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113848424B (en) |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5282478B2 (en) * | 2008-08-13 | 2013-09-04 | 東京電力株式会社 | Distribution line direct lightning strike rate calculation device, distribution line direct lightning strike rate calculation method, distribution line lightning strike rate calculation device, distribution line lightning strike rate calculation method, and program |
| CN104133135A (en) * | 2014-07-23 | 2014-11-05 | 国家电网公司 | Thunder stroke fault distinguishing method and device for power transmission tower |
| CN105116292B (en) * | 2015-09-09 | 2018-03-23 | 广东电网有限责任公司电力科学研究院 | Circuit lightning fault independent positioning method and system |
| CN106443342B (en) * | 2016-09-29 | 2018-11-23 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | The recognition methods of HVDC transmission line lightning failure point |
| CN108020755B (en) * | 2017-12-06 | 2020-05-22 | 国网山东省电力公司电力科学研究院 | Power grid fault positioning method based on fault recording and lightning positioning system |
-
2021
- 2021-09-24 CN CN202111122521.0A patent/CN113848424B/en active Active
Also Published As
| Publication number | Publication date |
|---|---|
| CN113848424A (en) | 2021-12-28 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110708114B (en) | Optical cable line fault positioning and visualization method and system based on AI image identification | |
| CN109765459B (en) | Single-phase earth fault positioning method and system based on in-situ study and judgment | |
| CN107632240B (en) | Overhead cable current data primary analysis method, health state monitoring method and system | |
| US10489019B2 (en) | Identifying and presenting related electrical power distribution system events | |
| CN115065591B (en) | Electric vehicle charging pile fault early warning system and method based on state space model | |
| CN105182122A (en) | Fault early warning method of random power supply access equipment | |
| JP2004215478A (en) | Transmission line fault locator, transmission line fault locating method, transmission line fault locating program, and recording medium recording the program | |
| CN115549094B (en) | Early warning evaluation method and system for substation equipment of smart power grid | |
| CN114781476B (en) | System and method for analyzing faults of measuring equipment | |
| CN116754901B (en) | Power distribution network fault analysis management platform based on quick positioning | |
| CN112487119B (en) | Power failure early warning signal verification method and system | |
| US20210072303A1 (en) | Power distribution fault location estimation using transient analysis | |
| CN111308386A (en) | Electric leakage detection system and detection method | |
| CN104684014A (en) | Mobile communication network transmission testing method | |
| CN113516406B (en) | High-speed rail line rainfall measurement point arrangement method based on real-time observation and analysis | |
| CN113848424B (en) | Distribution network lightning stroke fault verification and positioning method, device and system | |
| CN111856313B (en) | Double-circuit power supply real-time monitoring device | |
| CN107896159B (en) | System and method for evaluating operation and maintenance performance of transformer substation | |
| CN107294205B (en) | Substation state monitoring method based on information protection master station data | |
| CN112379225A (en) | Power equipment corona identification and evaluation alarm system and use method thereof | |
| CN116169778A (en) | Processing method and system based on power distribution network anomaly analysis | |
| CN112526285A (en) | Distributed online fault detection method and diagnosis system | |
| KR20210094786A (en) | Real Time Failure Analysis System and Determination Method | |
| CN113078729A (en) | Operation detection method and device applied to transformer substation, electronic equipment and medium | |
| CN117034195B (en) | Nuclear power instrument overhaul scheduling method and device, storage medium and computer equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |